I am looking for a software that could add virtual screens to my desktop. I need this for testing purposes

  • for high / strange resolutions
  • to get negative screen coordinates

So I want a new monitor to appear here:

Monitor Setup in Windows

I do not need multiple desktops.

The software must

  • work on Windows 7 / 10 (x64)
  • cost < 100 €
  • support different screen resolutions, up to 4k (4096 x 2160 pixels)
  • ideally support up to 9 screens so I can configure the maximum of 10 screens via the ordinary control panel

I don't necessarily need a way to see the contents updating in real time, but it should support creating a screenshot, e.g. with PrintScreen.

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